Immersive headset system and control method thereof

ABSTRACT

An immersive headset system includes a headset device and a displaying device. The headset device includes a pupillary sensor for determining an interpupillary distance value. The displaying device is communicated with the headset device. The displaying device includes a display panel for displaying an immersive content. The immersive content includes a right visual window and a left visual window. The right visual window and the left visual window are displayed synchronously at different positions on the display panel. When the displaying device receives the interpupillary distance value from the headset device, the right visual window and the left visual window of the immersive content are allocated by the displaying device according to the interpupillary distance value.

BACKGROUND

Technical Field

The present invention relates to an immersive headset system. Moreparticularly, the present invention relates to a method for controllingright and left visual windows provided by the immersive headset system.

Description of Related Art

Virtual reality (VR), Augmented Reality (AR), Substitutional Reality(SR), and/or Mixed Reality (MR) devices are developed to provideimmersive experiences to users. When a user wearing a head-mount displaydevice, the visions of the user will be covered by the immersive contentshown on the head-mount display device. The immersive content shows ascenario of a specific space.

There are different approaches to implement an immersive headset system.One of these approaches is to combine a head-mounted holder and a mobilephone. The head-mounted holder is wearable by the user. The mobile phonecan be accommodated in a slot in the head-mounted holder. The immersivecontent can be shown as a split screen on the display panel on themobile phone. For example, Google Cardboard is a way to provide thehead-mounted holder. The mobile phone utilized in this case may havedifferent sizes of display panels (e.g., from 4.5 inches to 6.5 inches).Sometimes, the user is required to adapt his/her eyes to the panel size,so as to see the immersive contents clearly.

SUMMARY

An embodiment of the disclosure provides an immersive headset system,which includes a headset device and a displaying device. The headsetdevice includes a pupillary sensor for determining an interpupillarydistance value. The displaying device is communicated with the headsetdevice. The displaying device includes a display panel for displaying animmersive content. The immersive content includes a right visual windowand a left visual window. The right visual window and the left visualwindow are displayed synchronously at different positions on the displaypanel. When the displaying device receives the interpupillary distancevalue from the headset device, the right visual window and the leftvisual window of the immersive content are allocated by the displayingdevice according to the interpupillary distance value.

An embodiment of the disclosure provides a control method, which can beutilized by an immersive headset system. The immersive headset systemincludes a displaying device for displaying an immersive content. Thecontrol method include following steps. An interpupillary distance valueis determined. The interpupillary distance value is transmitted to thedisplaying device. A right visual window and a left visual window of theimmersive content are allocated according to the interpupillary distancevalue.

Based on embodiments of the disclosure, the displaying device is able toallocate the right visual window and the left visual window according tothe interpupillary distance value detected by the headset device. Whenthe interpupillary distance value is changed, a distribution of theimmersive content on the display panel can be reallocated to be suitablefor visions of the user.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be more fully understood by reading the followingdetailed description of the embodiment, with reference made to theaccompanying drawings as follows.

FIG. 1A is a perspective diagram illustrating an immersive system 100according to an embodiment of the disclosure.

FIG. 1B is sectional view illustrating the immersive system along asectional line A-A in FIG. 1A.

FIG. 2 is a functional block diagram illustrating the immersive systemin FIG. 1A.

FIG. 3 is a flow chart diagram illustrating a control method accordingto an embodiment of the disclosure.

FIG. 4 is a schematic diagram illustrating an embodiment of theimmersive content shown on the display panel in FIG. 1B and FIG. 2.

FIG. 5 is a schematic diagram illustrating another embodiment of theimmersive content shown on the display panel in FIG. 1B and FIG. 2.

FIG. 6A is a schematic diagram illustrating an example of the immersivecontent with the left visual window and the right boundary of the rightvisual window located outside of the display panel.

FIG. 6B is a schematic diagram illustrating an embodiment of theadjusted left visual window and the adjusted right visual window.

FIG. 6C is a schematic diagram illustrating another embodiment of theadjusted left visual window and the adjusted right visual window.

FIG. 7 is a schematic diagram illustrating another embodiment of theleft visual window and the right visual window displayed on the displaypanel.

FIG. 8A is a schematic diagram illustrating an embodiment of theadjusted left visual window and the adjusted right visual window inrelative to the embodiment shown in FIG. 7.

FIG. 8B is a schematic diagram illustrating another embodiment of theadjusted left visual window and the right boundary of the adjusted rightvisual window.

FIG. 9 is a flow chart diagram illustrating a control method accordingto an embodiment of the disclosure.

FIG. 10 is a schematic diagram illustrating an embodiment of theimmersive content shown on the display panel related to the controlmethod shown in FIG. 9.

DETAILED DESCRIPTION

The following disclosure provides many different embodiments, orexamples, for implementing different features of the disclosure.Specific examples of components and arrangements are described below tosimplify the present disclosure. These are, of course, merely examplesand are not intended to be limiting. In addition, the present disclosuremay repeat reference numerals and/or letters in the various examples.This repetition is for the purpose of simplicity and clarity and doesnot in itself dictate a relationship between the various embodimentsand/or configurations discussed.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which example embodiments belong. Itwill be further understood that terms, such as those defined in commonlyused dictionaries, should be interpreted as having a meaning that isconsistent with their meaning in the context of the relevant art andwill not be interpreted in an idealized or overly formal sense unlessexpressly so defined herein.

FIG. 1A is a perspective diagram illustrating an immersive system 100according to an embodiment of the disclosure. The immersive system 100includes a headset device 120 and a displaying device 140. As shown inFIG. 1A, the headset device 120 includes a housing 121. The displayingdevice 140 can be accommodated at a fixed position within the housing121.

In an embodiment, the headset device 120 can be a head mount which iswearable on a head of a user or suitable to be placed in front of eyesof the user. In an embodiment, the displaying device 140 can be a smartphone, a mobile phone, a portable displayer or any equivalent electronicapparatus. Reference is also made to FIG. 1B and FIG. 2. FIG. 1B issectional view illustrating the immersive system 100 along a sectionalline A-A in FIG. 1A. FIG. 2 is a functional block diagram illustratingthe immersive system 100 in FIG. 1A.

As shown in FIG. 2, the displaying device 140 includes a display panel146. When the displaying device 140 is accommodated within the headsetdevice 120, the headset device 120 is configured to locate a positionthe display panel 146 in front of eyes of the user (e.g., the observerwearing the immersive system 100), such that the user can see immersivecontents (e.g., an image, a three-dimension video, a virtual realityscene, an augmented reality, etc.) displayed on the display panel 146.The whole field of the user will be covered by the display panel 146,such that so the user can enjoy an immersive experience provided by theimmersive system 100.

In an embodiment, the headset device 120 and the displaying device 140in the immersive system 100 can be manufactured separately orindividually. For example, the headset device 120 and the displayingdevice 140 can be manufactured by different providers, or differentmodels from the same providers. In an embodiment, the headset device 120is configured to be compatible with different models of displayingdevices 140, and these displaying devices 140 may have various sizes ofthe display panel 146. In this case, the housing 121 may include anadjustable holder (not shown in figures) to fasten the position ofdifferent displaying devices 140.

As shown in FIG. 1B, the headset device 120 is configured to be locatedin front of eye visions of the user. Every individual person may havehis/her own features of his/her eyes. For example, different persons mayhave different interpupillary distances (IPD). The interpupillarydistance is a gap distance between the centers of the pupils of the twoeyes. As shown in FIG. 1B, the centers of the pupils of the two eyes aregapped with a specific interpupillary distance IPDu. The interpupillarydistance IPDu is critical for the design of binocular viewing systems.The interpupillary distance IPDu may be different for different users.Each person will have his/her own interpupillary distance IPDu.

As shown in FIG. 1B, there are a left projection point PL1 in front ofthe center of the left pupil and a right projection point PR1 in frontof the center of the right pupil. When a left visual window of theimmersive content is displayed on the display panel 146 around the leftprojection point PL1 and a right visual window of the immersive contentis displayed on the display panel 146 around the right projection pointPR1, the eye visions are aligned to the immersive contents. Two eyes ofthe user can be relaxed and look forward to the front. The left visualwindow and the right visual window are configured to display parallaxvision images with different viewpoints, which are designedcorresponding to two individual eyes of user. The left visual windowwill be observed by the left eye of the user and the right visual windowwill be observed by the right eye of the user, such that the user willsee a stereoscopic scene with both eyes in combination.

On the other hand, if the left visual window of the immersive content isdisplayed around another point PL2 and the right visual window of theimmersive content is displayed around another point PR2 as shown in FIG.1B, the user is required to stress his/her eye while observing theimmersive content displayed on the display panel 146. There is amisalignment between two eyes of the user and the immersive contentbecause the immersive content is not displayed corresponding to theinterpupillary distance. In this case, aforesaid misalignment may causea cross-eye experience to the user, and the eyes of the user may gettired easily for being stressed inward to see the immersive content.

As an embodiment shown in FIG. 2, the headset device 120 includes acommunication circuit 122, a pupillary sensor 124 and a lens module 126.The pupillary sensor 124 is coupled with the communication circuit 122and the lens module 126. The pupillary sensor 124 of the headset device120 is configured to determine an interpupillary distance value IPDv(referring to FIG. 2) corresponding to the interpupillary distance IPDubetween two pupils of the user (referring to FIG. 1B).

In an embodiment, the interpupillary distance value IPDv determined bythe pupillary sensor 124 is preferably to be equal to the interpupillarydistance IPDu between two pupils of the user as shown in FIG. 1B.

In an embodiment, the interpupillary distance value IPDv determined bythe pupillary sensor 124 is utilized by the headset device 120 toconfigured some parameters on the headset device 120. For example, thelens module 126 is adjusted according to the interpupillary distancevalue IPDv.

In an embodiment, the lens module 126 of the headset device 120 includesa left lens unit 126L and a right lens unit 126R referring to FIG. 1B.Locations of the left lens unit 126L and the right lens unit 126R aremoved correspondingly to the interpupillary distance value IPDvdetermined by the pupillary sensor 124. As shown in FIG. 1B, a centerLCL of the left lens unit 126L and a center LCR of the right lens unit126R are gapped with a distance corresponding to the interpupillarydistance value IPDv. In an embodiment, the lens module 126 furtherincludes a mechanical actuator (e.g., a gear set and/or a micro motor),which is configured to move the left lens unit 126L and the right lensunit 126R inward to each other when the interpupillary distance valueIPDv is shorter, and move the left lens unit 126L and the right lensunit 126R outward far from each other when the interpupillary distancevalue IPDv is longer. Therefore, the left lens unit 126L and the rightlens unit 126R of the lens module 126 are located in front of two pupilsof both eyes correspondingly to the interpupillary distance value IPDv.

If the headset device 120 is mounted on another user with a differentinterpupillary distance IPDu (e.g., the previous user has ainterpupillary distance of 65 mm and the headset device 120 is nowmounted on another user with another interpupillary distance of 68.5mm), the pupillary sensor 124 is configured to determine the newinterpupillary distance value IPDv (e.g., the pupillary sensor 124 willupdate the interpupillary distance value IPDv from 65 mm to 68.5 mm).

In an embodiment, the pupillary sensor 124 includes an adjustmentcontroller 124 a (referring to FIG. 1A) disposed on the headset device120. The adjustment controller 124 a can be operated manually by theuser. The interpupillary distance value IPDv is adjusted correspondingto a manipulation input on the adjustment knob 124 a. For example, theadjustment controller 124 a shown in FIG. 1A is an adjustment rotatableknob, the interpupillary distance value IPDv will be increased when theadjustment controller 124 a is rotated clockwise, and the interpupillarydistance value IPDv will be decreased when the adjustment controller 124a is rotated counter-clockwise. The disclosure is not limited thereto.The interpupillary distance value IPDv can be adjusted by the adjustmentcontroller 124 a in other equivalent manipulation manners with differentadjustment controllers (e.g., by switch buttons, by an adjustment bar,via input keypads, etc.).

In another embodiment, the pupillary sensor 124 includes an eye-trackingcamera 124 b (referring to FIG. 1A) disposed on the headset device 120.The eye-tracking camera 124 b is configured to measure theinterpupillary distance value IPDv. For example, the eye-tracking camera124 b can capture images of the eyes. The locations of the pupils aredetected by the eye-tracking camera 124 b, and the interpupillarydistance value IPDv is measured accordingly by the eye-tracking camera124 b.

Based on aforesaid embodiments, the interpupillary distance value IPDvcan be determined by the pupillary sensor 124 of the headset device 120.In an embodiment, the interpupillary distance value IPDv is utilized bythe headset device 120 to move the left lens unit 126L and the rightlens unit 126R correspondingly, and the interpupillary distance valueIPDv is also transmitted from the headset device 120 to the displayingdevice 140. The interpupillary distance value IPDv is also utilized bythe displaying device 140 to allocate the left visual window and theright visual window of the immersive content.

In an embodiment, the communication circuit 122 can be a wirelesscommunication circuit (e.g., a Bluetooth transceiver, a BLE transceiver,a WiFi-direct transceiver, a Zigbee transceiver, an infrared transceiverand/or other wireless transceiver circuits) or a cable transmissioninterface (a USB transmission interface and/or other wired cableinterfaces). The communication circuit 122 of the headset device 120 isconfigured to send the interpupillary distance value IPDv determined bythe pupillary sensor 124 to the displaying device 140.

As an embodiment shown in FIG. 2, the displaying device 140 includes acommunication circuit 142, a processing circuit 144 and the displaypanel 146. The communication circuit 142 of the displaying device 140can be a wireless communication circuit (e.g., a Bluetooth transceiver,a BLE transceiver, a WiFi-direct transceiver, a Zigbee transceiver, aninfrared transceiver and/or other wireless transceiver circuits) or acable transmission interface (a USB transmission interface and/or otherwired cable interfaces) corresponding to the communication circuit 122of the headset device 120. In an embodiment, the communication circuit142 is configured to receive the interpupillary distance value IPDv fromthe headset device 120. The processing circuit 144 is coupled with thecommunication circuit 142 and the display panel 146. The processingcircuit 144 is configured to process the immersive content to bedisplayed on the display panel 146. In an embodiment, the processingcircuit 144 will process the immersive content according to theinterpupillary distance value IPDv, such that the immersive content willbe optimized for the user current utilizing the immersive system 100. Inan embodiment, the processing circuit 144 can include a graphicprocessing unit (GPU), a central processing unit (CPU), a processor, asystem on chip (SoC) circuit and/or any equivalent processing circuits.Details about how to process the immersive content will be explained infollowing paragraphs.

Reference is further made to FIG. 3 and FIG. 4. FIG. 3 is a flow chartdiagram illustrating a control method 200 according to an embodiment ofthe disclosure. The control method 200 can be utilized by the immersivesystem 100 shown in FIG. 1A, FIG. 1B and FIG. 2. FIG. 4 is a schematicdiagram illustrating an embodiment of the immersive content shown on thedisplay panel 146 in FIG. 1B and FIG. 2.

As shown in the embodiment of FIG. 4, the immersive content shown on thedisplay panel 146 includes a right visual window RWd and a left visualwindow LWd. The immersive content also includes a non-active area NAoutside than the right visual window RWd and a left visual window LWd onthe display panel 146. The non-active area NA can be displayed with as ablack background surrounding the right visual window RWd and a leftvisual window LWd. The right visual window RWd and the left visualwindow LWd are displayed synchronously at different positions on thedisplay panel. Because the left lens unit 126L and the right lens unit126R of the headset device 120, the fields of views of the user willsubstantially fall within the right visual window RWd and the leftvisual window LWd. The non-active area NA will be located outside thefields of views of the user (or located on the edges of the fields ofviews of the user). The non-active area NA may help to separate twovisual windows (e.g., the right visual window RWd and the left visualwindow LWd) and guide eyes of the user to the correct visual windows, soas to reduce the cross-eye experience.

As shown in FIG. 2 and FIG. 3, operation S202 is executed to determinethe interpupillary distance value by the pupillary sensor 124. In theembodiment shown in FIG. 4, the current interpupillary distance valueIPD1 is determined by the pupillary sensor 124 corresponding to thecurrent user. Operation S204 is executed to transmit the interpupillarydistance value IPD1 to the displaying device 140. Operation S206 isexecuted by the processing circuit 144 to allocate the right visualwindow RWd and the left visual window LWd of the immersive contentaccording to the interpupillary distance value IPD1.

As shown in FIG. 4, the right visual window RWd and the left visualwindow LWd are allocated by the processing circuit 144 to have a gapdistance GD1 between the center CR1 of the right visual window RWd andthe center CL1 of the left visual window LWd. The gap distance GD1 isconfigured to be positively correlated to the interpupillary distancevalue IPD1. If the interpupillary distance value IPD1 is longer, theright visual window RWd and the left visual window LWd will be allocatedby the processing circuit 144 to have a wider gap distance GD1. If theinterpupillary distance value IPD1 is shorter, the right visual windowRWd and the left visual window LWd will be allocated by the processingcircuit 144 to have a closer gap distance GD1.

In the embodiment shown in FIG. 4, the gap distance GD1 is configured tobe equal to the interpupillary distance value IPD1, such that the rightvisual window RWd and the left visual window LWd will be aligned to eyevisions of the users. In this case, the eyes of user can look straightforward without stressing eyes inward or outward.

In addition, as the embodiment shown in FIG. 4, the positions of theleft lens unit 126L and the right lens unit 126R are also movedcorresponding to the interpupillary distance value IPD1, such that adistance between the centers of the left lens unit 126L and the rightlens unit 126R will be equal to the interpupillary distance value IPD1.In an embodiment, the left lens unit 126L and the right lens unit 126Rare moved by a mechanical actuator (e.g., a gear set and/or a micromotor).

It is noticed that the locations of the right visual window RWd and theleft visual window LWd in the embodiment are not fixed at defaultpositions and will be reallocated dynamically by the processing circuit144 when the interpupillary distance value varies.

Reference is further to FIG. 2, FIG. 3 and FIG. 5. FIG. 5 is a schematicdiagram illustrating another embodiment of the immersive content shownon the display panel 146 in FIG. 1B and FIG. 2. For example, the immersesystem 100 is now utilized by another person with a differentinterpupillary distance value IPD2. In the embodiment, theinterpupillary distance value IPD2 in FIG. 5 is wider than theinterpupillary distance value IPD1 shown in FIG. 4. The interpupillarydistance value IPD2 can be determined by the pupillary sensor 124 inFIG. 2 (e.g., through the adjustment controller 124 a or theeye-tracking camera 124 b in FIG. 1A) in the operation S202. Theinterpupillary distance value IPD2 is sent to the displaying device 140in the operation S204. Then, operation S206 is executed by theprocessing circuit 144 to allocate the right visual window RWd and theleft visual window LWd of the immersive content according to theinterpupillary distance value IPD2.

In the embodiment shown in FIG. 5, the right visual window RWd and theleft visual window LWd are allocated by the processing circuit 144 tohave another gap distance GD2 between the center CR2 of the right visualwindow RWd and the center CL2 of the left visual window LWd. The gapdistance GD2 is configured to be positively correlated to theinterpupillary distance value IPD2.

In the embodiment shown in FIG. 5, the gap distance GD2 is configured tobe equal to the interpupillary distance value IPD2 determined by thepupillary sensor 124. Compared to the embodiment shown in FIG. 4corresponding to the interpupillary distance value IPD1, the rightvisual window RWd and the left visual window LWd in FIG. 5 are movedaway from each other. The right visual window RWd and the left visualwindow LWd in FIG. 5 are allocated to have the gap distance GD2 (equalto the interpupillary distance value IPD2), such that the allocations ofthe right visual window RWd and the left visual window LWd in FIG. 5will match the user who has the relative longer interpupillary distancevalue IPD2. If the right visual window RWd and the left visual windowLWd are not reallocated and fixed at the center CL1/CR1, the user isrequired his/her eyes inward to look into the right visual window RWdand the left visual window LWd. Based on the dynamically allocation ofthe right visual window RWd and the left visual window LWd, eye visionsof the user with a longer interpupillary distance value IPD2 can also bealigned to the locations of the right visual window RWd and the leftvisual window LWd as shown in FIG. 5.

In addition, as the embodiment shown in FIG. 5, the positions of theleft lens unit 126L and the right lens unit 126R are also movedcorresponding to the interpupillary distance value IPD2, such that adistance between the centers of the left lens unit 126L and the rightlens unit 126R will be equal to the interpupillary distance value IPD2.In an embodiment, the left lens unit 126L and the right lens unit 126Rare moved by a mechanical actuator (e.g., a gear set and/or a micromotor).

Operations S202 to S206 of the control method 200 can be repeated everytime when the interpupillary distance value varies (e.g., from IPD1 toIPD2) or a new interpupillary distance value is detected. In aforesaidembodiments, the gap distance GD1/GD2 is configured to be positivelycorrelated to the interpupillary distance value IPD1/IPD2. When theinterpupillary distance value increases, the right visual window RWd andthe left visual window LWd are moved outward away from each other.

However, the display panel 146 has a dimensional limitation. Therefore,the right visual window RWd and the left visual window LWd may not beable to move further outward over a boundary of the display panel 146.In an embodiment, a threshold value is determined by a panel width Wdpof the display panel 146, a first dimensional parameter of the rightvisual window RWd, and a second dimensional parameter of the left visualwindow LWd.

As shown in FIG. 4, the display panel has a panel width Wdp. In theembodiment of FIG. 4, the right visual window and the left visual windoware squircle windows. The right visual window RWd has with a defaultwindow width Wwd1. The left visual window LWd also has with the samedefault window width Wwd1. The threshold value in the embodiment can beassigned as “Wdp-Wwd1”.

In the embodiment of FIG. 4, a sum of the interpupillary distance valueIPD1 and the window width Wwd1 is shorter than the panel width Wdp(i.e., IPD1+Wwd1<Wdp, which means that IPD1 is less than the threshold),such the left boundary of the left visual window LWd and the rightboundary of the right visual window RWd are located within the displaypanel 146.

In the embodiment of FIG. 5, a sum of the interpupillary distance valueIPD2 and the window width Wwd1 is still shorter than the panel width Wdp(i.e., IPD2+Wwd1<Wdp, which means that IPD2 is less than the threshold),such the left boundary of the left visual window LWd and the rightboundary of the right visual window RWd are still located within thedisplay panel 146.

When the interpupillary distance value exceeds the threshold value, theright visual window RWd and the left visual window LWd with defaultshapes and default sizes shown in FIG. 4 and FIG. 5 will be locatedoutside the boundary of the display panel 146.

Reference is further made to FIG. 6A. FIG. 6A is a schematic diagramillustrating an example of the immersive content with a left boundary ofthe left visual window LWd and a right boundary of the right visualwindow RWd located outside of the display panel 146. In the embodiments,it is assumed that the interpupillary distance value IPD3 is determinedby the pupillary sensor 124. In this embodiment, the interpupillarydistance value IPD3 is larger than the interpupillary distance valueIPD1/IPD2 in FIG. 4 or FIG. 5. In this embodiment, a sum of theinterpupillary distance value IPD3 and the default window width Wwd1exceeds the panel width Wdp (i.e., IPD3+Wwd1>Wdp, which means that IPD3exceeds the threshold), such that the right visual window RWd and theleft visual window LWd with default shapes and default sizes shown inFIG. 4 and FIG. 5 are no longer suitable to be displayed on the displaypanel 146, when the interpupillary distance value IPD3 exceeds thethreshold value “Wdp-Wwd1”.

As shown in FIG. 3, the control method in an embodiment further includeoperation S208 to determine whether the interpupillary distance valueexceeds the threshold value or not. Based on aforesaid embodiments shownin FIG. 4, FIG. 5, and FIG. 6A, the threshold value can be configured tobe “Wdp-Wwd1”. For embodiments shown in FIG. 4 (IPD1<Wdp-Wwd1) and FIG.5 (IPD2<Wdp-Wwd1), the right visual window RWd and the left visualwindow LWd will be allocated according to the interpupillary distancevalue IPD1/IPD2 respectively and returns to operation S202.

For embodiments shown in FIG. 6A (IPD3>Wdp-Wwd1), operation S210 of thecontrol method 200 is executed to adjust shapes or dimensionalparameters of the right visual window RWd and the left visual window LWdaccording to the interpupillary distance value IPD3.

Reference is further made to FIG. 6B. FIG. 6B is a schematic diagramillustrating an embodiment of the adjusted left visual window LWd andthe adjusted right visual window RWd in S210. In the embodiment shown inFIG. 6B, the right visual window RWd and the left visual window LWd areadjusted to have reduced widths. As the embodiment shown in FIG. 6B, awidth of the right visual window RWd is reduced from the default windowwidth Wwd1 (referring to FIG. 6A) to a reduced window width Wwd2.Similarly, a width of the right visual window LWd is reduced from thedefault window width Wwd1 (referring to FIG. 6A) to a reduced windowwidth Wwd2. Because the right visual window RWd and the left visualwindow LWd are adjusted to have the reduced width, the right visualwindow RWd and the left visual window LWd can be fitted into the displaypanel 146 with the gap distance GD3. The gap distance GD3 is locatedbetween the center CR3 of the right visual window RWd and the center CL3of the left visual window LWd by the processing circuit 144.

Reference is further made to FIG. 6C. FIG. 6C is a schematic diagramillustrating another embodiment of the adjusted left visual window LWdand the adjusted right visual window RWd in S210. In the embodimentshown in FIG. 6C, the right visual window RWd and the left visual windowLWd are reshaped into round rectangular windows. In the embodiment shownin FIG. 6C, the round rectangular windows have the same height as theoriginal visual windows and reduced widths relative to the originalvisual windows. As the embodiment shown in FIG. 6C, the reshaped rightvisual window RWd and the reshaped left visual window LWd are adjustedto be able to fit into the display panel 146 with the gap distance GD3.The gap distance GD3 is located between the center CR3 of the reshapedright visual window RWd and the center CL3 of the reshaped left visualwindow LWd.

Based on aforesaid embodiments shown in FIG. 6B and FIG. 6C, the gapdistance GD3 between the adjusted visual windows are dynamically decidedby the interpupillary distance value IPD3. The processing circuit 144further processes to adjust the right visual window RWd and the leftvisual window LWd (by adjusting shapes or dimensional parameters) to fitthe adjusted windows into the boundary of display panel 146. Therefore,the right visual window RWd and the left visual window LWd can bealigned to the user's visions and also fully displayed on the displaypanel 146.

Furthermore, as the embodiment shown in FIG. 6B and FIG. 60, thepositions of the left lens unit 126L and the right lens unit 126R arealso moved corresponding to the interpupillary distance value IPD3, suchthat a distance between the centers of the left lens unit 126L and theright lens unit 126R will be equal to the interpupillary distance valueIPD3. In an embodiment, the left lens unit 126L and the right lens unit126R are moved by a mechanical actuator (e.g., a gear set and/or a micromotor).

In aforesaid embodiments, the right visual window RWd and the leftvisual window LWd are squircle windows for demonstration. However, thedisclosure is not limited thereto. In some other embodiments, the rightvisual window RWd and the left visual window LWd can be shaped in othersuitable shapes. Reference is further made to FIG. 7. FIG. 7 is aschematic diagram illustrating another embodiment of the left visualwindow LWd and the right visual window RWd displayed on the displaypanel 146.

As the embodiment shown in FIG. 7, the right visual window RWd and theleft visual window LWd are circular windows. The right visual window RWdand the left visual window LWd are allocated by the processing circuit144 to have a gap distance GD4 between the center CR4 of the rightvisual window RWd and the center CL4 of the left visual window LWd. Theright visual window RWd is a circular window has a default radius R1originated from the center CR4. The left visual window LWd is anothercircular window has the same default radius R1 originated from thecenter CL4. The threshold value is determined by the panel width Wdp ofthe display panel 146 and the default radius R1 of the right visualwindow RWd and the default radius R1 of the left visual window LWd. Inthis embodiment, the threshold value is configured to be “Wdp−2*R1”.

In the embodiment shown in FIG. 7, the interpupillary distance valueIPD4 is lower than the threshold value “Wdp−2*R1”. The center CR4 of theright visual window RWd and the left center CL4 of the left visualwindow LWd are arranged to have a gap distance GD4, which is positivelycorrelated to the interpupillary distance value IPD4. Similarly toaforesaid embodiments, the gap distance GD4 is configured to be equal tothe interpupillary distance value IPD4 by the processing circuit 144 inoperation S202-S206.

Furthermore, as the embodiment shown in FIG. 7, the positions of theleft lens unit 126L and the right lens unit 126R are also movedcorresponding to the interpupillary distance value IPD4, such that adistance between the centers of the left lens unit 126L and the rightlens unit 126R will be equal to the interpupillary distance value IPD4.

Reference is further made to FIG. 8A. FIG. 8A is a schematic diagramillustrating an embodiment of the adjusted left visual window LWd andthe adjusted right visual window RWd in S210 relative to the embodimentshown in FIG. 7. If another interpupillary distance value IPD5 isdetermined to be over the threshold value “Wdp−2*R1” in operation S208,the left visual window LWd and the right visual window RWd will beadjusted in operation S210.

In the embodiment shown in FIG. 8A, the right visual window RWd isadjusted to have the reduced radius R2, which is shorter than thedefault radius R1 (referring to FIG. 7). Similarly, the left visualwindow LWd is adjusted to have the reduced radius R2, which is shorterthan the default radius R1 (referring to FIG. 7). Because the rightvisual window RWd and the left visual window LWd are adjusted to havethe reduced radius R2, the right visual window RWd and the left visualwindow LWd can be fitted into the display panel 146 with the gapdistance GD5. The gap distance GD5 is located between the center CR5 ofthe right visual window RWd and the center CL5 of the left visual windowLWd.

Reference is further made to FIG. 8B. FIG. 8B is a schematic diagramillustrating another embodiment of the adjusted left visual window LWdand the right boundary of the adjusted right visual window RWd in S210.In the embodiment shown in FIG. 8B, the right visual window RWd and theleft visual window LWd are reshaped from circular windows (referring toFIG. 7) into oval windows. In the embodiment shown in FIG. 8B, the ovalwindows have the same height as the original visual windows and reducedwidths relative to the original visual windows. As the embodiment shownin FIG. 8B, the reshaped right visual window RWd and the reshaped leftvisual window LWd are adjusted to be able to fit into the display panel146 with the gap distance GD5. The gap distance GD5 is located betweenthe center CR5 of the reshaped right visual window RWd and the centerCL5 of the reshaped left visual window LWd by the processing circuit144.

Furthermore, as the embodiment shown in FIG. 8A and FIG. 8B, thepositions of the left lens unit 126L and the right lens unit 126R arealso moved corresponding to the interpupillary distance value IPD5, suchthat a distance between the centers of the left lens unit 126L and theright lens unit 126R will be equal to the interpupillary distance valueIPD5.

Based on aforesaid embodiments, the locations of the visual windows canbe dynamically allocated with different gap distances according to theinterpupillary distance values, such that the user can observe theimmersive content without stressing his/her eyes, and so to provide anoptimal viewing experience. In addition, when the interpupillarydistance is relatively larger (over a specific threshold value), shapesor dimensional parameters of the visual windows are adjusted to avoidthe visual windows from extending out of the boundary of the displaypanel.

In some embodiments, the locations of the visual windows can bedynamically moved along a horizontal direction with different gapdistances according to the interpupillary distance values. However, thedisclosure is not limited thereto. Reference is further made to FIG. 9,which is a flow chart diagram illustrating a control method 900according to an embodiment of the disclosure. The control method 900 canbe utilized by the immersive system 100 in FIG. 1A, FIG. 1B and FIG. 2.

As shown in FIG. 9, operation S902 is executed to determine theinterpupillary distance value and detect an eye height level by thepupillary sensor 124. For example, the pupillary sensor 124 includes aneye-tracking camera 124 b (referring to FIG. 1A) disposed on the headsetdevice 120. The eye-tracking camera 124 b is configured to measure theinterpupillary distance value IPDv and detect the eye height level. Forexample, the eye-tracking camera 124 b can capture images of the eyes.The eye height level of the pupils are detected by the eye-trackingcamera 124 b, and the interpupillary distance value IPD6 is measuredaccordingly by the eye-tracking camera 124 b in the embodiment shown inFIG. 10.

FIG. 10 is a schematic diagram illustrating an embodiment of theimmersive content shown on the display panel 146 related to the controlmethod 900 shown in FIG. 9. As shown in FIG. 10, the eyes are detectedby the eye-tracking camera 124 b at the eye height level H1. The eyeheight level H1 is located above a reference eye height level H0 by aheight level difference Hd.

As shown in FIG. 9 and FIG. 10, operation S904 is executed to transmitthe interpupillary distance value IPD6 and the eye height level H1 tothe displaying device 140. Operation S906 is executed to allocate aright visual window RWd and a left visual window LWd of the immersivecontent according to the interpupillary distance value IPD6 and also theeye height level H1. In this embodiment, a gap distance GD6 between acenter CR6 of the right visual window RWd and a center CL6 of the leftvisual window LWd are decided by the processing circuit 144 according tothe interpupillary distance value IPD6. Details about how to allocatethe right visual window RWd and the left visual window LWd according tothe to the interpupillary distance value IPD6 has been discussed inembodiments shown in FIG. 4 to FIG. 8B and not to be repeated herein.

It is noticed that a height level of the center CR6 of the right visualwindow RWd and the center CL6 of the left visual window LWd are adjustedaccording to the eye height level H1. If the user wears the headsetdevice 120 in different ways, the eye height level H1 of the user maynot be located in the middle relative to the headset device 120. In theembodiment shown in FIG. 10, when the eye height level H1 is shiftedupward from the reference eye height level H0, the center CR6 of theright visual window RWd and the center CL6 of the left visual window LWdare moved toward the top side according to the eye height level Hi. Inthe embodiment, the center CR6 and the center CL6 are shifted upward tothe top side by the level difference Hd relative to a reference heightlevel HO (i.e., the middle level of the display panel 146).

On the other hand, the eye height level is detected to be lower than thereference eye height level H0, the processing circuit 144 can allocatethe height level of the center CR6 of the right visual window RWd andthe center CL6 of the left visual window LWd at lower locations relativeto the reference height level H0.

Other behaviors of operations S902 to S910 of the control method 900 aresimilar to operations S202 to S210 of the control method 200 inaforesaid embodiments. Details about how to allocate the right visualwindow RWd and the left visual window LWd according to the to theinterpupillary distance value IPD6 are explained in aforesaidembodiments of the control method 200 in FIG. 3 and not to be repeatedherein.

Based on embodiments of control method 900 the right visual window RWdand the left visual window LWd of the immersive content can be allocatedaccording to the interpupillary distance value and also the eye heightlevel. Therefore, the right visual window RWd and the left visual windowLWd can be aligned to projection points of user visions in both of thehorizontal direction (according to the interpupillary distance value)and the vertical direction (according to the eye height level).Therefore, the immersive system can provide a better viewing experienceto the user.

Although the present disclosure has been described in considerabledetail with reference to certain embodiments thereof, other embodimentsare possible. Therefore, the spirit and scope of the appended claimsshould not be limited to the description of the embodiments containedherein.

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of the presentdisclosure without departing from the scope or spirit of the disclosure.In view of the foregoing, it is intended that the present disclosurecover modifications and variations of this disclosure provided they fallwithin the scope of the following claims.

What is claimed is:
 1. An immersive headset system, comprising: a headset device, comprising a pupillary sensor for determining an interpupillary distance value; and a displaying device, communicated with the headset device, the displaying device comprising: a display panel for displaying an immersive content comprising a right visual window, a left visual window and a non-active area, the right visual window and the left visual window being displayed synchronously at different positions on the display panel, the non-active area surrounding and separating the right visual window and the left visual window, in response to the displaying device receives the interpupillary distance value from the headset device, an entire of the right visual window and an entire of the left visual window of the immersive content being allocated according to the interpupillary distance value, wherein shapes or dimensional parameters of the right visual window and the left visual window are adjusted in response to that the interpupillary distance value exceeds a threshold value, and the threshold value is determined by a panel width of the display panel, a first dimensional parameter of the right visual window, and a second dimensional parameter of the left visual window.
 2. The immersive headset system of claim 1, wherein the displaying device further comprises a communication circuit, the communication circuit is configured to receive the interpupillary distance value from the headset device.
 3. The immersive headset system of claim 2, wherein the displaying device further comprises a processing circuit, the processing circuit is coupled with the communication circuit, the processing circuit is configured to process the immersive content to be displayed on the display panel.
 4. The immersive headset system of claim 1, wherein the right visual window and the left visual window are allocated to have a gap distance between a first center of the right visual window and a second center of the left visual window, the gap distance is configured to be positively correlated to the interpupillary distance value.
 5. The immersive headset system of claim 4, wherein the gap distance is configured to be equal to the interpupillary distance value determined by the pupillary sensor.
 6. The immersive headset system of claim 1, wherein the right visual window and the left visual window are reshaped from circular windows or squircle windows into oval windows or round rectangular windows in response to that the interpupillary distance value exceeds the threshold value.
 7. The immersive headset system of claim 1, wherein a radius or a width of the right visual window and the left visual window is reduced in response to that the interpupillary distance value exceeds the threshold value.
 8. The immersive headset system of claim 1, wherein the headset device further comprises: a housing for accommodating the displaying device; and a communication circuit coupled with the pupillary sensor, the communication circuit is configured to transmit the interpupillary distance value to the displaying device.
 9. The immersive headset system of claim 1, wherein the pupillary sensor comprises an eye-tracking camera disposed on the headset device, the eye-tracking camera is configured to measure the interpupillary distance value.
 10. The immersive headset system of claim 1, wherein the pupillary sensor comprises an adjustment controller disposed on the headset device, the interpupillary distance value is adjusted corresponding to a manipulation input on the adjustment controller.
 11. The immersive headset system of claim 1, wherein the pupillary sensor is further configured to detect an eye height level, the eye height level is transmitted to the displaying device, the right visual window and the left visual window is allocated further according to the eye height level.
 12. A control method, suitable for an immersive headset system, the immersive headset system comprises a displaying device for displaying an immersive content, the control method comprising: determining an interpupillary distance value; transmitting the interpupillary distance value to the displaying device, wherein the immersive content displayed on the displaying device comprising a right visual window, a left visual window and a non-active area, the non-active area surrounding and separating the right visual window and the left visual window; and allocating an entire of the right visual window and an entire of the left visual window of the immersive content according to the interpupillary distance value; adjusting shapes or dimensional parameters of the right visual window and the left visual window in the response to that the interpupillary distance value exceeds a threshold value, and the threshold value is determined by a panel width of the display panel, a first dimensional parameter of the right visual window, and a second dimensional parameter of the left visual window.
 13. The control method of claim 12, wherein the right visual window and the left visual window are allocated to have a gap distance between a first center of the right visual window and a second center of the left visual window, the gap distance is configured to be positively correlated to the interpupillary distance value.
 14. The control method of claim 13, wherein the gap distance is configured to be equal to the interpupillary distance value determined by the pupillary sensor.
 15. The control method of claim 12, wherein the right visual window and the left visual window are reshaped from circular windows or squircle windows into oval windows or round rectangular windows in response to that the interpupillary distance value exceeds the threshold value.
 16. The control method of claim 12, wherein a radius or a width of the right visual window and the left visual window is reduced in response to that the interpupillary distance value exceeds the threshold value.
 17. The control method of claim 12, further comprising: detecting an eye height level; transmitting the eye height level to the displaying device; and allocating the right visual window and the left visual window of the immersive content further according to the eye height level. 